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Finding the Fourth Proportional to 960.93, 1,442.95 and 650.57

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Solution

The fourth proportional to 960.93, 1,442.95 and 650.57 is: 976.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    960.93 : 1,442.95 = 650.57 : x
  2. Step 2: Convert to fraction form
    960.93/1,442.95 = 650.57/x
  3. Step 3: Cross multiply
    960.93x = 1,442.95 × 650.57
  4. Step 4: Simplify right side
    960.93x = 938,731.14
  5. Step 5: Solve for x
    x = 938,731.14/960.93
  6. Step 6: Final answer
    x = 976.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.